Mr. Clutterbuck,
Back in the friendlier days of Hord Hardin, a friend of mine was invited for two-day outings by a vendor, two or three years in a row. He was a very good player, our club champion a couple of times, with a sound long game, but just an average putter. He reported the same, a very playable course tee to green, but extremely difficult on and around the greens. He noted that because of the slope, the greens were always fast or slow; he could not get the pace, and that they were probably in the 10' range on the very few flat spots on them. In the 8+ rounds he played there, he broke 80 a couple of times, and was probably on the greens 13+ times each round.
BTW, is your a pseudonym?